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Re: [Tinycc-devel] [PATCH 3/3] stdatomic: stdatomic.h header


From: Elijah Stone
Subject: Re: [Tinycc-devel] [PATCH 3/3] stdatomic: stdatomic.h header
Date: Tue, 26 Jan 2021 13:41:53 -0800 (PST)

This looks like this is a slightly pruned version of the llvm/clang stdatomic.h. If so, it needs a copyright notice. (Though I don't know why it would be better to use someone else's header for this purpose rather than vendoring one.)

 -E

On Tue, 26 Jan 2021, Dmitry Selyutin wrote:

---
include/stdatomic.h | 121 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
create mode 100644 include/stdatomic.h

diff --git a/include/stdatomic.h b/include/stdatomic.h
new file mode 100644
index 0000000..2088252
--- /dev/null
+++ b/include/stdatomic.h
@@ -0,0 +1,121 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Memory ordering */
+typedef enum {
+    memory_order_relaxed = __ATOMIC_RELAXED,
+    memory_order_consume = __ATOMIC_CONSUME,
+    memory_order_acquire = __ATOMIC_ACQUIRE,
+    memory_order_release = __ATOMIC_RELEASE,
+    memory_order_acq_rel = __ATOMIC_ACQ_REL,
+    memory_order_seq_cst = __ATOMIC_SEQ_CST,
+} memory_order;
+
+/* Atomic typedefs */
+#ifdef __cplusplus
+typedef _Atomic(bool) atomic_bool;
+#else
+typedef _Atomic(_Bool) atomic_bool;
+#endif
+typedef _Atomic(char) atomic_char;
+typedef _Atomic(signed char) atomic_schar;
+typedef _Atomic(unsigned char) atomic_uchar;
+typedef _Atomic(short) atomic_short;
+typedef _Atomic(unsigned short) atomic_ushort;
+typedef _Atomic(int) atomic_int;
+typedef _Atomic(unsigned int) atomic_uint;
+typedef _Atomic(long) atomic_long;
+typedef _Atomic(unsigned long) atomic_ulong;
+typedef _Atomic(long long) atomic_llong;
+typedef _Atomic(unsigned long long) atomic_ullong;
+typedef _Atomic(uint_least16_t) atomic_char16_t;
+typedef _Atomic(uint_least32_t) atomic_char32_t;
+typedef _Atomic(wchar_t) atomic_wchar_t;
+typedef _Atomic(int_least8_t) atomic_int_least8_t;
+typedef _Atomic(uint_least8_t) atomic_uint_least8_t;
+typedef _Atomic(int_least16_t) atomic_int_least16_t;
+typedef _Atomic(uint_least16_t) atomic_uint_least16_t;
+typedef _Atomic(int_least32_t) atomic_int_least32_t;
+typedef _Atomic(uint_least32_t) atomic_uint_least32_t;
+typedef _Atomic(int_least64_t) atomic_int_least64_t;
+typedef _Atomic(uint_least64_t) atomic_uint_least64_t;
+typedef _Atomic(int_fast8_t) atomic_int_fast8_t;
+typedef _Atomic(uint_fast8_t) atomic_uint_fast8_t;
+typedef _Atomic(int_fast16_t) atomic_int_fast16_t;
+typedef _Atomic(uint_fast16_t) atomic_uint_fast16_t;
+typedef _Atomic(int_fast32_t) atomic_int_fast32_t;
+typedef _Atomic(uint_fast32_t) atomic_uint_fast32_t;
+typedef _Atomic(int_fast64_t) atomic_int_fast64_t;
+typedef _Atomic(uint_fast64_t) atomic_uint_fast64_t;
+typedef _Atomic(intptr_t) atomic_intptr_t;
+typedef _Atomic(uintptr_t) atomic_uintptr_t;
+typedef _Atomic(size_t) atomic_size_t;
+typedef _Atomic(ptrdiff_t) atomic_ptrdiff_t;
+typedef _Atomic(intmax_t) atomic_intmax_t;
+typedef _Atomic(uintmax_t) atomic_uintmax_t;
+
+/* Atomic flag */
+typedef struct {
+    atomic_bool value;
+} atomic_flag;
+
+#define ATOMIC_FLAG_INIT { 0 }
+
+#define atomic_flag_test_and_set(object) \
+    __c11_atomic_exchange(&(object)->value, 1, __ATOMIC_SEQ_CST)
+#define atomic_flag_test_and_set_explicit(object, order) \
+    __c11_atomic_exchange(&(object)->value, 1, order)
+
+#define atomic_flag_clear(object) \
+    __c11_atomic_store(&(object)->value, 0, __ATOMIC_SEQ_CST)
+#define atomic_flag_clear_explicit(object, order) \
+    __c11_atomic_store(&(object)->value, 0, order)
+
+/* Generic routines */
+#define atomic_store(object, desired) \
+    __atomic_store(object, desired, __ATOMIC_SEQ_CST)
+#define atomic_store_explicit __atomic_store
+
+#define atomic_load(object) \
+    __atomic_load(object, __ATOMIC_SEQ_CST)
+#define atomic_load_explicit __atomic_load
+
+#define atomic_exchange(object, desired) \
+    __atomic_exchange(object, desired, __ATOMIC_SEQ_CST)
+#define atomic_exchange_explicit __atomic_exchange
+
+#define atomic_compare_exchange_strong(object, expected, desired) \
+    __atomic_compare_exchange_strong(object, expected, desired,
__ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+#define atomic_compare_exchange_strong_explicit
__atomic_compare_exchange_strong
+
+#define atomic_compare_exchange_weak(object, expected, desired) \
+    __atomic_compare_exchange_weak(object, expected, desired,
__ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+#define atomic_compare_exchange_weak_explicit __atomic_compare_exchange_weak
+
+#define atomic_fetch_add(object, operand) \
+    __atomic_fetch_add(object, operand, __ATOMIC_SEQ_CST)
+#define atomic_fetch_add_explicit __atomic_fetch_add
+
+#define atomic_fetch_sub(object, operand) \
+    __atomic_fetch_sub(object, operand, __ATOMIC_SEQ_CST)
+#define atomic_fetch_sub_explicit __atomic_fetch_sub
+
+#define atomic_fetch_or(object, operand) \
+    __atomic_fetch_or(object, operand, __ATOMIC_SEQ_CST)
+#define atomic_fetch_or_explicit __atomic_fetch_or
+
+#define atomic_fetch_xor(object, operand) \
+    __atomic_fetch_xor(object, operand, __ATOMIC_SEQ_CST)
+#define atomic_fetch_xor_explicit __atomic_fetch_xor
+
+#define atomic_fetch_and(object, operand) \
+    __atomic_fetch_and(object, operand, __ATOMIC_SEQ_CST)
+#define atomic_fetch_and_explicit __atomic_fetch_and
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
--
2.30.0

--
Best regards,
Dmitry Selyutin

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